KEY

KEY – Essential Locking Component for Rotary Drilling Tool Systems

In the demanding world of bored piling, every component counts—down to the smallest parts that hold everything together. The KEY is one of the most vital yet underestimated parts of your rotary drilling toolkit. Designed to lock and align tool sections like Kelly bars, augers, and casings in precise engagement, this compact but powerful component ensures seamless torque transmission and drilling alignment.

Manufactured with exacting precision by 3GEN Export, the KEY delivers unbeatable reliability and performance across the world’s leading bored piling rigs by BAUER, LIEBHERR, SOILMEC, SANY, and XCMG.

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What Is a KEY in Bored Pile Machinery?

The KEY is a machined steel insert—typically rectangular or oval in shape—that slots into keyways on Kelly bars, casing joints, or rotary connections. Its main function is to transmit torque while ensuring accurate positioning between mating components during rotation. Keys prevent axial rotation slippage between high-torque parts and safeguard structural stability throughout drilling operations.

Small in size but massive in consequence, a faulty or poorly machined key can lead to costly breakdowns, drilling misalignment, or even full tool disconnection under load.

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Technical Specifications

• Material: High-grade heat-treated alloy steel (commonly 42CrMo or equivalent)

• Shape: Oval, semi-oval, or rectangular with chamfered or rounded edges

• Finish: Precision-machined, anti-corrosion coated or galvanized upon request

• Hardness: 45–52 HRC (Rockwell) depending on torque class

• Dimensions: Available in standard sizes or custom upon request

• Mounting Style: Press-fit or sliding fit in keyways with friction locking

• Tolerance: Machined to <0.05 mm deviation for high-precision engagement

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Key Features of the KEY

• High Torque Transmission: Designed to withstand extreme torsional forces in rotary motion

• Durable Alloy Construction: Resistant to wear, fatigue, and shearing under load

• Accurate Alignment: Ensures component synchronization for precise drilling performance

• Interchangeable Design: Easily replaceable and customizable across different tool systems

• Minimal Maintenance: No lubrication required, non-threaded, long-term use

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Compatible Bored Pile Machines

This KEY is compatible with a wide variety of bored piling rigs and rotary tool connections from the world’s top manufacturers, including:

BAUER

• BG 18H, BG 20, BG 26, BG 36

• Kelly bar locking segments

• Kelly-to-auger and casing connections

LIEBHERR

• LB 24, LB 28, LB 36

• Suits square and hexagonal drive keys in casing shoes and rotary heads

SOILMEC

• SR-30, SR-50, SR-100

• Kelly drive locking elements and auger keyways

SANY

• SR235, SR285R, SR405

• Key slots in drilling buckets and casing joints

XCMG

• XR180, XR280, XR400

• Universal keyways in torque heads and casings

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Applications of the KEY in Drilling Projects

• Foundation Drilling: Ensures secure transmission between Kelly bars and casing tubes

• Rotary Tools: Locking mechanism in barrels, augers, and core barrels

• Casing Systems: Torque transfer keys between inner and outer casings

• Heavy Torque Rotary Heads: Torque control in motor-locked tools

• Offshore and Bridge Piling: Used in high-load marine and infrastructure foundations

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Advantages of Choosing 3GEN Export’s KEY

At 3GEN Export, we understand that even the smallest part plays a big role in productivity and safety. That’s why our KEY components are:

• Manufactured to tight tolerances with international grade certifications

• Available in both standard and custom formats

• Engineered to match specific drilling tool profiles

• Delivered globally in under 5 working days

• Packaged for durability and traceability with each shipment

We offer long-lasting performance and full compatibility support across various bored pile machine models—making us your one-stop OEM partner.

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Maintenance Tips

• Inspect for visible signs of wear, flattening, or burrs regularly

• Replace immediately if deformation or shearing is detected

• Store in clean, dry environments to prevent surface corrosion

• Use anti-seize coating if operating in extreme conditions

• Check tightness and fit after each shift for high-torque operations

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Packaging & Delivery

• Packaging: Industrial-grade blister pack or boxed in pairs

• Identification: Engraved part code or serialized tag

• Shipping Options: Air freight, DHL Express, or sea cargo

• Lead Time: Ships globally within 5 working days

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Summary

The KEY might not catch your eye like a casing or auger—but it’s the quiet force that holds your rotary power together. Whether you’re operating a BAUER Kelly bar or a LIEBHERR casing joint, a reliable key is critical for every torque-driven rotation. With 3GEN Export’s OEM-standard keys, you secure durability, performance, and global compatibility.

We’re here to deliver not just parts, but peace of mind—fast, certified, and engineered to keep your project on schedule.

Manufactured in Turkey, these products are made using the latest technologies and built to meet the highest international standards. Each machine is a high-quality copy of the original, ensuring durability, precision, and performance that you can rely on for modern construction and metalworking projects.

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